Cement-block machine.



F. W. HAWK.

CEMENT BLOCK MACHINE.

APPLICATION FILED APR. 2. 1901.

PATENTED JULY 30, 1907.

2 SHEETS-SHEET 1.

t I Him W No. 861,462. PATENTED JULY 30, 1907. P. W. HAWK.

CEMENT BLOCK MACHINE.

APPLICATION FILED APR. 2. 1907. 1

2 sums-51mm 2.

19% M poses attouwqo UNITED STATES PATENT OFFICE.

CEMENT-BLOCK MACHINE Specification of Letters Patent.

Patented July 30, 1907.

Application filed April 2, 1907. Serial No. 365,961.

To all whom it may concern.-

Be it known that I, FRED W. HAWK, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Illinois, have invented certain new and useful Improvements in Cement-Block Machines, of which the following is a specification.

This invention relates to apparatus for molding building blocks of cement or like self hardening plastic material, the purpose being to devise a novel form of mold and actuating means to admit of ready removal of the block after being formed and sufliciently set to permit of handling and to admit of the mold being positively moved into and out of working position.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to'be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or es-, sential features thereof, still the preferred embodiment is shown in the accompanying drawings, in which:

Figure 1 is a perspective view of a machine embodying the invention. Fig.2 is a vertical, longitudinal section. Fig. 3 is a transverse section. Fig. 4 is a transverse section showing the mold lowered and the hinged side thereof moved outward. Fig. 5 is a top plan view of the machine.-

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The frame-work comprises uprights or standards 1, foot pieces 2 and a top 3, the latter being secured to the upper ends of the standards and having openings 4 formed therein to receive the core pieces 5. A cross piece 6 connects the lower ends of the standards 1 to hold them in proper position. The mold is of box form and comprises ends '7 and sides 8 and 9. The side piece 8 is hinged or pivoted to the top 3 of the framework and is adapted to swing outward at its upper edge. The ends 7 and side piece 9 are connected for simultaneous movement being attached to a cross-head 10 which is slidable vertically upon the uprights or standards 1 and which cross-head carries the core pieces 5.

The cross-head 10 consists of longitudinal bars between which the core pieces 5 pass, the latter consisting of bars which project above and below said crosshead and extend at their upper ends to the plane of the upper edge of the mold. The top 3 constitutes the bottom of the mold and receives the material and supports the molded block until it sets sufliciently to admit of its safe handling. The end portions of the bars comprising the cross-head, embrace opposite sides of the standards 1, thereby preventing lateral displacement of the mold. The core pieces 5 have their outer edges in contact with the inner sides of the standards 1., and a tongue and groove connection is formed between them to materially assist in directing the core pieces and mold in their vertical movements. The core pieces 5 result in the provision of openings in the completed block. Ribs or raised portions 11. upon the inner faces of the end pieces 7 form indentations in the ends of the blocks which result in providing air passages or spaces between the ends of adjacent blocks when placed in position in a wall, partition or the like.

The mold, t'. 0., the end pieces 7, and the side 9, is

' adapted to receive a vertical movement and to effect this result, the following means have been devised: A lever frame is pivoted to the lower portion of the frame-work and is connected by links 12 with the end pieces. The lever frame comprises side elbow levers and a connecting bar 14, the long arm of the elbow levers occupying an approximately horizontal position when the mold is elevated, and a nearly vertical position when the mold is lowered. The short arms 15 of the elbow levers have the lower ends of the links 12 pivoted thereto and when the mold is elevated, the arms 15 and links 12 aline, the pivotal connection being in the same straight line with the result that the mold is held in its raised position against possible downward displacement. The connecting bar 14 provides convenient means for simultaneously operating both elbow levers, whereby the mold is moved uniformly throughout its length both in raising and lowering. p

The movable side 8 of the mold is swung outward and inward by cooperating cams, which in the present instance, consist of bars 16 and 17. The bars 16 are secured to the ends of'the side 8 and their lower ends project below the side 8 and are outwardly curved.

The bars 17 are secured to the end pieces 7 and project beyond vertical edges thereof and terminate in hooks 18 which engage the bar 16. When the mold moves downward, the hooked ends 18 of the bars 17 riding upon the outwardly curved ends of the bars 16 draw said ends inward and correspondingly move the upper edge portion of the side 8 outward. When the mold is elevated, the hooked ends 18 of the bars 17 cooperating with the bars 16, draw the upper ends of the latter inward and move the side piece 8 inward against the adjacent edges of the end pieces 7, thereby completely closing the mold. When the mold is elevated, the material of which the block is to be formed is filled into the mold and tamped, a straight edge being passed over the upper side of the mold to remove projecting parts. After the block has set to admit of its exposure, the mold is lowered and the side piece 8 swung outward, thereby exposing the block to the action of the air so as to hasten the setting and drying the pile or place selected lor the complete hardening and drying of the blocks.

The manner of hinging or pivoting the side piece 8 to the top 3 is immaterial so long as the joint admits of swinging the side 8 towards and from the mold space at its upper edge.

Having thus described the invention, What is claimed as new is:

1. In a machine for molding blocks, the combination of a support, a mold embodying inclosing sides, one of the sides being hinged or pivoted and the other three sides movable about parallel with said hinged or pivoted side, and means between said hinged or pivoted side and the reciprocating part of the mold to insure pivotal movement of said hinged side as the remaining portion of the mold is reciprocated.

2. In a machine for molding building blocks, the combination of a mold comprising a fixed bottom, a pivoted side and a reciprocating side and ends, and cooperating means between the pivoted side and the reciprocating side of the mold to effect oscillation of the said pivoted side as the reciprocating portion of the mold is operated.

3. In a block forming machine of the character specified, the combination of a support, a mold comprising a pivoted side and a reciprocating portion, bar's attached to the said pivoted side of the mold, and cooperating bars projected from the reciprocating portion of the mold and acting with the bars applied to the said pivoted side to effect oscillation thereof as the reciprocating portion of the mold is operated.

4. In a machine of the character specified, the combination of a relatively fixed support forming a mold bottom, a vertically movable support, inclosing sides, one of said sides being hinged to the fixed support to swing laterally in and out, the remaining sides being attached to the said movable support to ascend and descend therewith, and cooperating cam means between the vertically reciprocating sides of the mold and the laterally swinging side to effect a positive swinging of the latter side in both directions, substantially asset forth.

5. I11 combination a support, a side pivoted or hinged to thesnpport, curved extensions projected from the said pivoted side, a reciprocating mold portion and hooked bars extended from said reciprocating portion of the mold and cooperating with the curved extensions of the pivoted side or portion to effect oscillation thereof.

6. In combination, uprights, a top connecting the uprights and forming a mold bottom, a side hinged o1 pivoted to an edge of said top, curved extensions projected from said pivoted side, a reciprocating mold portion comprising three inclosingwalls, hooked bars applied to opposite walls of the reciprocating portion of the mold and adapted to cooperate with the curved projections of the pivoted side to effect oscillatory movement of said pivoted side as the reciprocating portion of the mold is operated, and means for imparting a rectilinear reciprocating movement to the reciprocating portion of the mold. 4

7. A machine for molding building blocks, the same com-- prising a frame-work embodying a top forming a bottom of the mold, a cross-head, three inclosing walls of the mold attached to the cross-head, a fourth wall of the mold pivoted or hinged to the top of said frame-work, cooperating means between the reciprocating and the oscillatory portions of the mold to effect pivotal movement of the oscillatory side as the reciprocating portion of the mold is operated, core pieces attached to said cross-head and projected through the top of the frame-work, cooperating guides between the core pieces and the uprights of the frame-work, and means for imparting movement to the reciprocating portion of the mold and holding the same elevated.

In testimony whereof I affix my signature in presence of two witnesses.

' FRED W. HAWK. [1,. s]

Witnesses:

F. E. WILSON, B. B. COLLINS. 

